Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Does This sound right?

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Old Sep 11, 2002 | 03:20 PM
  #1  
FatOne's Avatar
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From: Ft. Campbell,Ky USA
Does This sound right?

I think I have my problem figured out "I hope". Well working with manual TCC switch. If I didn't hook it up to a switch and just a 12v source with a ground would that engage the lock up? If I took the wiring out because it wasn't shifting at all is the lock up still engaged? How do I get the lock up off from being locked up? Please some one help me!
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Old Sep 11, 2002 | 04:26 PM
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
To disengage lockup when you hit the brakes, just wire a relay in line with your brake pedal switch. Wire the coil (pins #85 and #86) in line with the brake switch. Wire the TCC circuitry to the "normally closed" side of the relay, that's pins #30 and #87.

When you press the brakes, the relay coil will energize. This will "make" the connection between pins #30 and 87A, but "break" the connection between #30 and #87- which would simulate you turning the switch to the TCC off.

But I don't have an idea how you'd get the TCC to disengage during normal driving, without hitting the brake... do you have the TCC go into lockup as soon as possible (once the 1-2 shift completes)?
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Old Sep 11, 2002 | 08:14 PM
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From: Ft. Campbell,Ky USA
That idea sounds good to me. My problem is I put the car into Drive and you can feel it go into gear. Start to eccelerate and my RMP's go way up put it will not shift into 1st, 2nd so on. Shifts fine into Neu, and Rev. What gives all I did was a manual TCC lock up and try no engage the lock up now it doesn't want to shift. How can I tell if the lock up is whats holding it up? Can you hear or feel this lock up and unlock taking place?
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Old Sep 12, 2002 | 01:13 PM
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I don't think any one wants to help me out! Thats ok I'll screw it all up some more. Thank you.
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Old Sep 12, 2002 | 03:47 PM
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
So you're saying the trans won't shift at all? Lockup wouldn't affect that. In fact, it's fluidically impossible for the TCC to go into lockup in 1st gear. The earliest gear the TCC solenoid can engage in is second gear. Lockup is only the torque convertor engaging directly, instead of coupling through the fluid.

Were you driving around before you played with the TCC? Or did you just put this trans in? If you did a shift kit, and changed the spring in the pressure regulator, if you put the snap ring in the wrong groove, it won't hold, the regulator shoots into the pan, and the car doesn't move. (But I don't think the car moves backwards, either.)
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Old Sep 12, 2002 | 06:29 PM
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From: Ft. Campbell,Ky USA
No I drove around the car for about 40 miles before the TCC conversion. After doing the tranny fluid and changing out the oil pressure switch and the lock up. Then wired in the lock up. With second ground and power 12v source. I didn't use a toggle and applied power to the lock up. Now I can go into drive fine. RPM's go up but no shift. I come to complete stop and apply the gas seems something catches cause I'll move forward. But doesn't want to shift after. I really don't know anymore. I really don't want to take the pan off and see whats up if I don't have to. Like I said I was thinking the lock up well was locked up still?
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